Re: staging evaluation in progress

[Mark H Weaver <mhw@netris.org>]

Marius Bakke <mbakke@fastmail.com> writes:

> Mark H Weaver <mhw@netris.org> writes:
>
>> Hi Marius,
>>
>> Marius Bakke <mbakke@fastmail.com> writes:
>>
>>> I just started a 'staging' evaluation:
>>>
>>> https://hydra.gnu.org/jobset/gnu/staging
>>>
>>> Fairly minor changes this round, highlights include Wayland 1.15 and
>>> GStreamer 1.14.  We narrowly missed Mesa 17.3.9 which was scheduled for
>>> today but delayed, hopefully 17.3.8 doesn't introduce any new bugs.
>>>
>>> Results should start ticking in tomorrow.
>>
>> The main issue I see so far is that 'gst-plugins-base' seems to
>> consistently fail the "elements/opus" test on i686-linux.  It failed
>> twice in a row, anyway:
>>
>>   https://hydra.gnu.org/build/2635798
>
> I can reproduce this failure locally, and could not find related bug
> reports or git commits upstream.  For now I downgraded to 1.12.5 so we
> can proceed, and will report the i686 and armhf issues upstream.

Instead of downgrading gstreamer, I think it would be better to simply
disable that test on i686 for now.  Most likely, it is due to tests that
are intolerant of the double rounding that occurs on i686 without SSE2,
where the old x87 FP instructions are used instead.  The double rounding
happens because x87 operations are performed on 80-bit double-extended
precision floating-point numbers, which must then be rounded a second
time when they are converted to 64-bit doubles as used in C.

What do you think?

      Mark